White to Non-White Racial Dissimilarity (5-year estimate) Index for Jefferson County, MS was 22.32% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Jefferson County, MS reached a record high of 22.32 in January of 2022 and a record low of 10.02 in January of 2014. Trading Economics provides the current actual value, an historical data chart and related indicators for White to Non-White Racial Dissimilarity (5-year estimate) Index for Jefferson County, MS - last updated from the United States Federal Reserve on May of 2024.